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β-Elimination and insertion of CNR in transient pentamethylcyclopentadienyl-imido-tantalum dialkyl complexes. X-ray structure of [TaCp*{N(2,6-Me2C6H3)}(CH2=CH2)(PMe3)]

Identificadores del recurso

Journal of Organometallic Chemistry, 1998, v.563, n.1-2, p.15-21

0022-328X

http://hdl.handle.net/10017/4276

10.1016/S0022-328X(98)00570-1

Jatorria

(e_Buah - Biblioteca Digital de la Universidad de Alcalá)

Fitxa

Izenburu:: β-Elimination and insertion of CNR in transient pentamethylcyclopentadienyl-imido-tantalum dialkyl complexes. X-ray structure of [TaCp*{N(2,6-Me2C6H3)}(CH2=CH2)(PMe3)]
Tema:: Alkyl; Imido; Iminoacyl; Pentamethylcyclopentadienyl; Tantalum; Ciencia; Química inorgánica; Science; Chemistry, inorganic
Deskribapen:: The transient dialkyl complexes [TaCp*R2(NAr)] (Cp*=C5Me5; R=Et, n-Pr; Ar=2,6-Me2C6H3), obtained by alkylation of [TaCp*Cl2(NAr)] with two equiv. of RMgCl in diethylether at low temperature, react with one equiv. of PMe3 to give [TaCp*(NAr)(CH2CHR)(PMe3)] (R=H1, Me2) after β-elimination and reductive elimination of alkane. When the same alkylation is carried out and then one equiv. of CN(2,6-Me2C6H3) is added after heating to room temperature, the alkyl iminoacyl insertion products [TaCp*R{η2-CR=N(Ar)}(NAr)] (R=Et3, n-Pr4) are obtained. However when alkylation with one equiv. of MgClR (R=Et, n-Pr, i-Pr) is carried out at ambient temperature after the addition of CN(2,6-Me2C6H3), the chloro iminoacyl complexes [TaCp*Cl{η2-CR=NAr)}(NAr)] (R=Et 5, n-Pr 6, i-Pr 7) are isolated. The structure of [TaCp*(NAr)(CH2=CH2) (PMe3)] (1) has been determined by X-ray diffraction methods.; Consiglio Nazionale delle Ricerche (Rome); Ministerio de Educación y Cultura
Idioma:: English
Harreman:: http://www.dx.doi.org/10.1016/S0022-328X(98)00570-1; info:eu-repo/grantAgreement/MEC//PB-92-0178-C/ES
Autor/Productor:: Royo Gracia, Pascual; Sánchez-Nieves Fernández, Javier; Pellinghelli, Maria Angela; Tiripicchio, Antonio
Argitaratzaile:: Elsevier
Otros colaboradores/productores:: Universidad de Alcalá. Departamento de Química Inorgánica; Unidad docente Química Inorgánica
Eskubideak:: © Elsevier, 1998; info:eu-repo/semantics/openAccess
Data:: 2009-10-20T11:58:46Z; 1998
Tipo de recurso:: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion
Formatu:: application/pdf

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4. <dc:creator>Pellinghelli, Maria Angela</dc:creator>
5. <dc:creator>Tiripicchio, Antonio</dc:creator>
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7. <dc:subject>Imido</dc:subject>
8. <dc:subject>Iminoacyl</dc:subject>
9. <dc:subject>Pentamethylcyclopentadienyl</dc:subject>
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11. <dc:subject>Ciencia</dc:subject>
12. <dc:subject>Química inorgánica</dc:subject>
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4. <dc:creator>Pellinghelli, Maria Angela</dc:creator>
5. <dc:creator>Tiripicchio, Antonio</dc:creator>
6. <dc:subject>Alkyl</dc:subject>
7. <dc:subject>Imido</dc:subject>
8. <dc:subject>Iminoacyl</dc:subject>
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15. <dc:description>The transient dialkyl complexes [TaCp*R2(NAr)] (Cp*=C5Me5; R=Et, n-Pr; Ar=2,6-Me2C6H3), obtained by alkylation of [TaCp*Cl2(NAr)] with two equiv. of RMgCl in diethylether at low temperature, react with one equiv. of PMe3 to give [TaCp*(NAr)(CH2CHR)(PMe3)] (R=H1, Me2) after β-elimination and reductive elimination of alkane. When the same alkylation is carried out and then one equiv. of CN(2,6-Me2C6H3) is added after heating to room temperature, the alkyl iminoacyl insertion products [TaCp*R{η2-CR=N(Ar)}(NAr)] (R=Et3, n-Pr4) are obtained. However when alkylation with one equiv. of MgClR (R=Et, n-Pr, i-Pr) is carried out at ambient temperature after the addition of CN(2,6-Me2C6H3), the chloro iminoacyl complexes [TaCp*Cl{η2-CR=NAr)}(NAr)] (R=Et 5, n-Pr 6, i-Pr 7) are isolated. The structure of [TaCp*(NAr)(CH2=CH2) (PMe3)] (1) has been determined by X-ray diffraction methods.</dc:description>
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1. <title>β-Elimination and insertion of CNR in transient pentamethylcyclopentadienyl-imido-tantalum dialkyl complexes. X-ray structure of [TaCp*{N(2,6-Me2C6H3)}(CH2=CH2)(PMe3)]</title>
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3. <creator>Sánchez-Nieves Fernández, Javier</creator>
4. <creator>Pellinghelli, Maria Angela</creator>
5. <creator>Tiripicchio, Antonio</creator>
6. <subject>Alkyl</subject>
7. <subject>Imido</subject>
8. <subject>Iminoacyl</subject>
9. <subject>Pentamethylcyclopentadienyl</subject>
10. <subject>Tantalum</subject>
11. <description>The transient dialkyl complexes [TaCp*R2(NAr)] (Cp*=C5Me5; R=Et, n-Pr; Ar=2,6-Me2C6H3), obtained by alkylation of [TaCp*Cl2(NAr)] with two equiv. of RMgCl in diethylether at low temperature, react with one equiv. of PMe3 to give [TaCp*(NAr)(CH2CHR)(PMe3)] (R=H1, Me2) after β-elimination and reductive elimination of alkane. When the same alkylation is carried out and then one equiv. of CN(2,6-Me2C6H3) is added after heating to room temperature, the alkyl iminoacyl insertion products [TaCp*R{η2-CR=N(Ar)}(NAr)] (R=Et3, n-Pr4) are obtained. However when alkylation with one equiv. of MgClR (R=Et, n-Pr, i-Pr) is carried out at ambient temperature after the addition of CN(2,6-Me2C6H3), the chloro iminoacyl complexes [TaCp*Cl{η2-CR=NAr)}(NAr)] (R=Et 5, n-Pr 6, i-Pr 7) are isolated. The structure of [TaCp*(NAr)(CH2=CH2) (PMe3)] (1) has been determined by X-ray diffraction methods.</description>
12. <date>2009-10-20</date>
13. <date>2009-10-20</date>
14. <date>1998</date>
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16. <identifier>Journal of Organometallic Chemistry, 1998, v.563, n.1-2, p.15-21</identifier>
17. <identifier>0022-328X</identifier>
18. <identifier>http://hdl.handle.net/10017/4276</identifier>
19. <identifier>10.1016/S0022-328X(98)00570-1</identifier>
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24. <rights>© Elsevier, 1998</rights>
25. <publisher>Elsevier</publisher>
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11. <dcterms:abstract>The transient dialkyl complexes [TaCp*R2(NAr)] (Cp*=C5Me5; R=Et, n-Pr; Ar=2,6-Me2C6H3), obtained by alkylation of [TaCp*Cl2(NAr)] with two equiv. of RMgCl in diethylether at low temperature, react with one equiv. of PMe3 to give [TaCp*(NAr)(CH2CHR)(PMe3)] (R=H1, Me2) after β-elimination and reductive elimination of alkane. When the same alkylation is carried out and then one equiv. of CN(2,6-Me2C6H3) is added after heating to room temperature, the alkyl iminoacyl insertion products [TaCp*R{η2-CR=N(Ar)}(NAr)] (R=Et3, n-Pr4) are obtained. However when alkylation with one equiv. of MgClR (R=Et, n-Pr, i-Pr) is carried out at ambient temperature after the addition of CN(2,6-Me2C6H3), the chloro iminoacyl complexes [TaCp*Cl{η2-CR=NAr)}(NAr)] (R=Et 5, n-Pr 6, i-Pr 7) are isolated. The structure of [TaCp*(NAr)(CH2=CH2) (PMe3)] (1) has been determined by X-ray diffraction methods.</dcterms:abstract>
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  11. <dc:description>The transient dialkyl complexes [TaCp*R2(NAr)] (Cp*=C5Me5; R=Et, n-Pr; Ar=2,6-Me2C6H3), obtained by alkylation of [TaCp*Cl2(NAr)] with two equiv. of RMgCl in diethylether at low temperature, react with one equiv. of PMe3 to give [TaCp*(NAr)(CH2CHR)(PMe3)] (R=H1, Me2) after β-elimination and reductive elimination of alkane. When the same alkylation is carried out and then one equiv. of CN(2,6-Me2C6H3) is added after heating to room temperature, the alkyl iminoacyl insertion products [TaCp*R{η2-CR=N(Ar)}(NAr)] (R=Et3, n-Pr4) are obtained. However when alkylation with one equiv. of MgClR (R=Et, n-Pr, i-Pr) is carried out at ambient temperature after the addition of CN(2,6-Me2C6H3), the chloro iminoacyl complexes [TaCp*Cl{η2-CR=NAr)}(NAr)] (R=Et 5, n-Pr 6, i-Pr 7) are isolated. The structure of [TaCp*(NAr)(CH2=CH2) (PMe3)] (1) has been determined by X-ray diffraction methods.</dc:description>
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